pyplot zooming in

Question

I am trying to plot some data from FITS files and I wanted to know if anyone knows how to focus on certain regions of a plot's axis? Here is some example code:

import pyfits from matplotlib import pyplot as plt from matplotlib import pylab from pylab import * #Assuming I have my data in the current directory a = pyfits.getdata('fits1.fits') x = a['data1'] # Lets assume data1 is the column: [0, 1, 1.3, 1.5, 2, 4, 8] y = a['data2'] # And data2 is the column: [0, 0.5, 1, 1.5, 2, 2.5, 3] plt.plot(x,y) 

How could I only plot the region from [1.3 to 4] in the x-axis?

Answer 1

Use the plt.axis() function with your limits.

plt.axis([x_min, x_max, y_min, y_max]) 

where x_min, x_max, y_min, and y_max are the coordinate limits for both axes.